Very good Cheese sauce

This is the best vegan cheese sauce I have ever made and for those who are gluten free or nut free it is safe for you too :)

2TBS Olive oil
2 1/2TBS rice flour
1 1/4c soy, nut, or rice milk
1 1/2TBS nutritional yeast
1/4tsp salt
1/4tsp garlic powder
1/4tsp onion powder
1/4tsp dry mustard
1/2TBS lemon juice or more to taste
1/8tsp nutmeg
1/4tsp paprika
1/4tsp turmeric
1TBS tahini

Place oil in pan and heat, slowly add flour and whisk together, cook while stirring for a couple of minutes until the flour begins to brown, then slowly add milk while whisking to prevent lumps, whisk in all remaining ingredients except tahini, and cook until desired consistency, remove from heat and stir in tahini. Serve over chips or veggies.